Valve mechanism for explosion-motors.



A. J. B. JAUBERT.

VALVE MEGHANISM FR EXPLOSION MOTORS.

APPLICATION FILED AUG,16.1912.

Patented Dee. 8, 1914 2 SHEETS-SHEET 1.

Wig?,

Tigri A. J. B. JAUBBRT.

VALVE MEOHANISM FOB EXPLOSION MOTORS.

APPLIUATION FILED AUG. 16, 1912.

Patented Dec. 8, 1914.

2 SHEETS-SHEET 2.

ANTOINE JEAN BPTISTE JAUBERT, OF SIMIANE, FRANCE.

VALVE MECHANISM FOB. EXPLOSION-MOTORS.

Application filed August 16, 1912.

To all whom it may concern.'

Be it known that I,- ANTOINE JEAN BAP- TIs'rE JAUBERT, a citizen of the vFrench Republic', residing at Simiane, Basses-Alpes, in France, have invented a certain new and useful Improvement in Valve Mechanism for Explosion-Motors, of which the following is a specification.

This invention relates to valve mechanism for explosion motors for effecting the distribution of the-motive Huid in explosion motors without any mechanicallshock and with a rapid opening and closing 'of the admission and exhaust ports so as to diminish as much asvpossible restriction of the passage of the gas.

The mechanism allows the provision of a cylindrical explosion chamber without lateral recesses or openings the walls being absolutely smooth at the moment of the explosion the ports being then all covered.

The improved mechanism comprises an annular v-alve member arranged in the motor cylinder above the piston without contact with the latter and sliding between the water jacketed cylinder and a water jacketed plug so as to uncover at the required times the admission and exhaust ports.

The arrangement of the valve member be tween water jackets, coolingr it intcriorly and exteriorly provides means for maintaining it at a sufficiently low temperature to assure its proper function.

The annexed .drawing illustrates three examples of construction of the invention.

Figures 1 and 2 are vertical sections of a motor provided with` the valve mechanism. Fig. 3 illustrates a detail of construction. Figs. 4 and 5 are vertical sections illustrating two modifications of shape of the water jacketed plug of the cylinder. l a is the cylinder, I) the motor piston, c the annular valve member sliding between the l.water jacketed cylinder a and water jackveted plug d shaped like a lixcd piston. The

valve is provided at e with one or more packing rin s to assure gas tightness in the cylinder. he plug d is also provided with packing rings at f. The sparking` plug is inserted at g. The admission is made by an annular series of ports k formed in the valve mcrubcr, which when the latter descends form communication between the cylinder and the conduit i thc ports L moving below the lower edge or a shoulder of d. 1n Figs. 1 and 2 the ports are shown in the positions i Specification of Letters Patent.

Patented Dec. 8, 1914.

Serial No. 715,384.

are covered and that the wall of the eXploy sion chamber is absolutely smooth.

The valve operates in the following man" ner: During the descent of the piston at the periods of admission the valve descends and its ports coincide with similar orifices 12.1,'

made in the' wall of the cylinder at the level of the conduit The valve then a'scends and is maintained during compression and. expansion at about the position shown'iiiil Fig. 1 then at the time of exhaust continues to rise to uncover the orifices j. At the end,v of the exhaust it rapidly descends to obturate the ports j and uncover the admission ports. lt is necessary therefore that the rising movement of the valve be interrupted at the middle of the stroke by a period of rest and that its descending stroke should on the contrary be as rapid as possible. Further the valve must return to its point 'of de- ,parture after two complete rotations of the motor the latter being of four stroke cycle. The suitable movement is communicated to the valve by means of rods c Fig. 2 appertaining to any number'guided parallerto` the axis of the cylinder the said rods extend ing into the crank chamber, where the governing mechanism, which may be of any suitable kind is arranged. The 4movement of the valve is in the example shown effected by. means of a balance beam Z in the form of a fork actuatcd'by two eccentrica m, n ol which the one turns at half the speed and the other at the speed of the motor. The ecccntrics m, 'n act on guide blocks m1, nl which slide on the rod of the fork l shown in plan in Fig. 3. This arrangement has the advantage of displacing the points of oscillation of the fork l to increase the speed of descent o'the valve. Further it allows of equally distributing the force to the two ends of the arms of the fork, the latter acting like a swing bar. As can be seen from the drawing the valve member c slides between cooling surfaces formed by the circulation of cooling water in the cylinder jacket and by the water. circulation in the plug d so that the valve member ismaintained suliicieutly cool for its proper function. In order to obtain a greater cooling eti'ect the plug o can be extended into the cylinder by a part 0 of restricted diameter acting as. a deflector and forming :in annular space p, through which the fresh gases introduced at. pass while lic-hing the lower part of the vulve member c in passing into the cylinder. Further during 'the explosion the'annular space j) contains i1 thin gaseous layer which being immediat-ely cooled by the walls shields the vulve from too direct Contact of the exploded gus. As Shown in Fig. 5 the le.\;tension 'nt the brise of the plug may .be

hollowed as atj.

"lmt I cli-im :is iv invention and desire to secure by LettereAV Pat-ent of the United States isz-` l l`)istribution mechanism for explosion moL tors coniprising in combination :i `motor cylinder `having an annular series of inlet ports and :in annular seriesof outlet ports, u. plug oi Smaller diameter thun the interior of said cylinder extending into the one end thereof., a piton working in said cylinder, u cylindrical vulve member of the sume diameter as the piston, reciproeatzible in the cylinder above Suid pieton und between the inner wall of the cylinder und the outer well of said plug7 said valve member having an annular series of ports in its wall, Yadapt.- ed to communicate with'said'inlet ports of the cylinder and allowing theentrance of the motive uid on pasein'g the loweiedge of said plug-"fvhen the vlzilyel member` descends the said outlet pots'in the Vcylinder being unmasked by the iower edge of said valve member when it rises, two l ugs `erranged symmetrically opposite one another at the upper'end of 'said valve. member,

means connected to said lugs for imparting reciprocating, movement to said valve member, a packing ring mounted in the outer wall of snid valve'memberfadjaeent the lower edgethereof, providing a. gas tight joint between the vulve'end the cylinder,.

and :i pecking-'ring' arranged in the outer face of the plug edpicentthe "lower edge thereof providing a gais tight joint between the vulve :ind the. plug..

- In witness whereof I have signed this specification in the presence of two vvitnesses. 'y

ANTOINE JEAN lSl"i-ISTH.L\UIEI'I. Witnesses:

M. LAiL-uy, V. O'i'roN. 

